package com.amumu.drama.common.utils;

import lombok.Getter;
import org.springframework.beans.BeansException;
import org.springframework.context.ApplicationContext;
import org.springframework.context.ApplicationContextAware;
import org.springframework.stereotype.Component;

import java.util.ArrayList;
import java.util.List;

/**
 * Spring工具类
 * Created by macro on 2020/3/3.
 */
@Component
public class ApplicationContextUtil implements ApplicationContextAware {

    @Getter
    private static ApplicationContext applicationContext;

    @Override
    public void setApplicationContext(ApplicationContext applicationContext) throws BeansException {
        this.applicationContext = applicationContext;
    }

    // 通过name获取Bean
    public static Object getBean(String name) {
        return getApplicationContext().getBean(name);
    }

    // 通过class获取Bean
    public static <T> T getBean(Class<T> clazz) {
        return getApplicationContext().getBean(clazz);
    }

    // 通过name,以及Clazz返回指定的Bean
    public static <T> T getBean(String name, Class<T> clazz) {
        return getApplicationContext().getBean(name, clazz);
    }

    public static <T> List<T> getBeans(Class<T> type) throws BeansException {
        return new ArrayList<>(getApplicationContext().getBeansOfType(type).values());
    }

}
